Philips Norelco Series 3000-13 Piece MG3740/4013 pieces for all of your grooming needs: Beard and stubble trimming and maintenance, precision trimmer allows exact placement for sharp lines, nose and ear trimmer taking care of unwanted hairs Self sharpening steel blades remain sharp as day one for long lasting performance, no blade oil required. Easily clean blades and guards by detaching from handle and rinsing under water Unlike competition, no blade oil needed to maintain high quality